27438372280 has 32 divisors (see below), whose sum is σ = 67348733040. Its totient is φ = 9977589760.

The previous prime is 27438372259. The next prime is 27438372287. The reversal of 27438372280 is 8227383472.

It is a self number, because there is not a number n which added to its sum of digits gives 27438372280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438372287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31179529 + ... + 31180408.

Almost surely, 2^27438372280 is an apocalyptic number.

27438372280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27438372280 is an abundant number, since it is smaller than the sum of its proper divisors (39910360760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27438372280 is a wasteful number, since it uses less digits than its factorization.

27438372280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62359959 (or 62359955 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 27438372280 in words is "twenty-seven billion, four hundred thirty-eight million, three hundred seventy-two thousand, two hundred eighty".